1.How does the supply of air affect combustion of saturated hydrocarbons?
2. What is indicated by:
- sooty flame
- blue flame of a bunsen burner?
- Why are holes provided at the bottom of a bunsen burner?
Answer:
- If air supply is not sufficient, saturated hydrocarbons give yellow sooty flame.
- Yellow sooty flame-Burning of unsaturated hydrocarbons such as’ ethene and ethyne/ incomplete combustion (any one),
- Blue flame-Burning of saturated hydrocarbons/complete combustion.
- Holes let the supply of air to be adjusted for complete combustion.